Window guard



July 29 1924. 1,562,833 l l F. lKITZELMAN wrunow GUARD Filed Feb. l. 1923 Patented July 29, 1924.

narran srarss Lti PTNT QFFQEL.

FRANK KITZELMAN, or CHICAGO, ILLINOIS, AssIsNOa rro ACORN wma a IRON WORKS,

or CHICAGO, ILLINOIS),` A CORPORATION or ILLINOIS.

WINDOW GUARD.

Application led February 12, 1923. Serial No. 618,481.

To all whom t may concern.'

Be it known that I, F RANK KITZELMAN, a citizen of the United States, and resident of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Window Guards, of which the following is a full, clear, concise, and exact description, reference being had to the Aaccompanying drawings, forming a part of this specification.

My invention relates to window guards,

and is more particularly concerned with folding` lattices or collapsible grilles for windows, doors and the like, and especially with foldinglattices of the lazy tongs type, wherein one end of the lattice is pivoted at one side of the window'or door frame, and means is provided at the other side of the frame for securing the opposite end of the lattice when the latter is in its extended position. y g

The principal objects of my invention are:

First: To provide a folding lattice of the type described, wherein the stationary supporting bracket may readily7 be secured to the frame of the window by screws or bolts, and the unauthorized removal of these securing screws or bolts isprevented while the lattice is in place in its extended position, this result` being accomplishedby certain parts of the structure which are adapted to swing away from or over the heads ofthe bolts or screws.v

Second: To vprovide a burglar-proof but inexpensive means Afor pivoting the lazy tongs upon their supporting bracket.

Third: To provide fora folding lattice of the type described yanefl'ective but inexpensive manner of securing the free end of the lattice toits associated window frame when the lattice isA in its extendedrposition.

Cther objects and advantages of my invention willappear in the course of the following description thereof, aspillustrated in the accompanying drawings, wherein Figure lis a side elevation of a window frame 4to which has been secured the folding lattice structure of my invention, thelattice being shown inits Avextended position;

Figure 2 is a transverse vertical section of theA window taken 'on the line 2 2 of 'Figure 1, but showing the lattice in its foldedfposition `and'swung outwardly into Ia planeat right angles to theY window i While my invention is equally adaptable to f doorways, fences and the like, I yhave chosen to illustrate it as embodied in awindow such as illustrated in Figure 1, which comprises a frame consisting of the left and right vertical rails 10 and 11, and the sash 12 and 13. Extending across the lower portion of the window is a folding lattice 14, comprising a plurality of metal strips l5 formed by rows ofpivots 16 into lazy tongs. Certain of the strips 15 are shorter than their mates at each end of the lazy tongs, whereby the lazy tongs terminate at the left end at the upper and lower pivots 17 and 18, and at the right end at the upper and lower pivots 19 andL 20 respectively. The novel means whereby I suspend the left or hinged end of the lattice and secure the stationary portions thereof to the window frame will now be described.

Adjacent the pivots 17 and 18, the supporting bar or bracket 21, which is here shown as substantially square in cross-sec-` tion, is vertically ,disposed against the inner kportion 0f the leftha'nd rail orrmember 10 of the window frame, andseoured thereto means of screws 22 andl 2 3, adjacent its upper and lower ends respectively.` These screwsv are preferably countersunk and extend through the bars into the wood of the framework.k Ifdesired, an additional centrally located retaining screw 24 may also be provided; Extendingifrom the upper and the lower yends respectively of the bar 21 arepivot bolts25 and 2 6, the inner ends 'of which extend into the adjacent yends of the bar ,iand are there secured by pinsA 25 which are riveted into place. Disposed betweenfthe head ofthe pivot bolt 25 and thelupper endof the'barA-21 is the collar portin`27of a swivel member 28, which terminates in a downwardly projecting plate 29 which is provided with the vertically elongated slot 30. A similar swivel member 31 is provided at the. bottom. end. of the bar 21, except that the upwardly projecting plate portion of the swivel is not provided with an elongated slot, but simply with a hole for the reception ot the pivot pin 18, which supports :the lazy tongs at its lower and lernt end, Kthe upper corner .of the lazy tongs at this end being supported by the pivot pin 17 which passesthrough the slot 30 of the swivel member 28. The purpose'of the elongated slot 30' as is readily seen is toprovide tor a vertical separation of the pivots 1T and 18l when the Y' lattice work is collapsed.

It is clear from the foregoing description: that theA folding lattice; issupported wholly at the left frame of thev windowand by meansV ofthe' swivelmembers 28 and 31 is vertically pivoted` longitudinally'of. the bar 21, and that the'lattice maybe swung about the axis of the pivot bolts 25 and 26.' It will'bereadily observed `that when the lattice is swung outwardly about the pivot bolts 25 and 26 as shown in Figure 2, both the retaining` screws 22 and 23, which secure the bar 21 to the window frame, are readily accessible, and the support-ing bar together with its associated lazy tongs may be removed. However, when the lattice is swung back into the plane ot the window, the edge 29 of the downwardly extending plate of the swivel member 28` directly overlies the head of the retaining screw 22, (Figure 6) making it very dilhcult to turn the head ot the screw with a screw driver, and impossible to remove the screw more than a fraction of'an inch, provided the screw can be turned. The same portion 29 also overlies the outer end of the riveted pin 25", making it impossible to place an instrument `against the end of the pin toivdrive it out into the wood ofthe frame, and'. tree the pivot bolt 25. Similarly, the upwardly extending portion 31 of the swivel 31 longitudinally overlies the-lower retaining screw 23, and the locking pin for the pivot bolt 26. It is clear then that thelattice cannot be disassociated from the frameof the window at its hinged end, because the pivot bolts 25 and 26 cannot be removed from the ends of the bar 21v to free theswivel members 28 or 31, and thescrews 22 and 23 cannot be removed to reethebar 21,-so long as the lattice'isswung intothe'plane of thewindow, although, of course*` authorized removal ofthe whole device fromthe window can easily be madefbv 'swinging the lattice intoV theposition of Figure 2.

The means whereby the free'a end ofthe lattice` is Vlocked Vin position' at the-opposite side 11 of'vthelwindow frame comprises .in general yi a bar 32f atthe-I end' ofiAv the'f lazy` tongs, and a stationary channel member 33 secured to the frame 11. The bar 32 is secured to the pivots 19 and 2O at the right orfree end of the lazy tongs by means of brackets 3i and 35, which are very similar to the swivel members 28 and 31, except that it is not essential that they be in swivel connection with the bar 32. Similarly to swivel member 28, the bracket 31 is provided with an elongated slot 34, to allow for the folding of the lazy tongs; When the. lattice is in position across'` the window, the rbarl 32 lies'within the channel member 33, the latter being secured to the trame 1-1. withA its web disposed against the windowframe. Suitable retaining screwsy pass through thev holes 36' in thel webct the channel member toV secure the latter to the. trame. A tongue 37 is secured in the mid portion of the web ofthe channel member, the inner end; of the tongueA being peened over a countersunk slot in thel web. The tongue 37 is adapted to pass through a slot 38` in t-he bar 32, and is provided at its outer end with a'suitable hofle 39forthe reception of the bow of a padlock 110, which. prevents the withdrawal of the bar 32 from the channel member 33.

Thus, it will be seen that the padlock 40 by preventing the removal of the bar 32 from the channel member prevents the removal of t-he screws passing through the hole-s 36 in the web of the channel member, because. thev bar 32V immediately overlies the screw heads, and that `the removal of the hinged end of the lattice is prevented so longrv as lthe free end isheld in the plane of the window as previouslyexplained.

While I have illustrated but one specific embodiment of my invention. l contempla-te that changes may be made therein without departing :tromthe scope or spirit ot my invention.

I claim.

1. A window gate comprisinga lazy tongs grille abracket therefor, said bracket being provided with a retaining; screw, a pivotal support on said bracket for one end ot said grille,r and means carried by said grilletor overlyingthe 'head' of said screw to prevent the'. removal ot the latter when said grille is swung into closed position` said screw being removable when said grille isswungl away Jfrom such position. l

2. A collapsible windowgrille comprisL ing a lazyv t'ongslattice, a. bracket bar, screws passing-through said bar for securing saidbar to awindowframe, boltsfextending longitudinally-from the ends ot said bar, said bolts beine` pinned inV saidbar, swivel members pivoted on said bolts, each of'said members comprising a collar portion surrounding 'said bolt and. a hole in whichY is pivotally supported .one enduotsaid lattice, one ot'-` saidfholesf being-eslotted to. allow for llO extension of said lattice, portions of said members, when said lattice is swung in position, longitudinally overlying said screws to prevent the removal of said screws, and means at the opposite end of said lattice for securing the latter in its extended posi tion.

3. The combination of a window frame, a grille therefor, a vertically disposed bar secured to a lateral side of said frame, screws passing through said bar adjacent its ends to secure said bar to saidframe, pivot pins extending longitudinally from the ends of said bar, swivel members supponted by said bar, each of said members comprising a sleeve portion surrounding one of said pins, and a portion extendingfrom said sleeve portion and provided with a transverse hole, said grille comprising a .lazy tongs, one end of which is pivotally supported in each of said holes, one of said holes being vertically elongated to provide for extension of said lazy tongs, one of said second mentioned portions of said swivel members being so positioned that when said grille is swung into place about said pivot pins said portion lies a short distance longitudinally beyond one of said screws to prevent the removal of the latter. n

l. The combination with a window or door frame of a grille therefor, said grille comprising a lazy tongs lattice, a bracket secured to one side of said frame, swivel members on said bracket, one end of said lazy tongs being pivotally supported on each of said swivel members to allow the folding of said lazy tongs, said grille being swingable about the axis of said swivel members, a bar secured by pivots to the opposite end of said lazy tongs, a channel member disposed against the opposite side of said frame, the web of said channel member lying toward said frame, screws passing through the web of said channel member to secure the latter to said frame, said channel member being adapted to receive said bar when said gille is in position whereby said bar covers the heads or" said screws to prevent their removal, and means for locking said bar in said channel member.

5. The combination with a window or door frame of a grille therefor, said grille comprising a lazy tongs lattice, a bracket secured to one side of said frame, swivel members on said bracket, one end of said lazy tongs being pivotally supported on each of said swivel members to allow the folding of said l-azy tongs, said grille being swingable about the axis of said swivel members, a bar secured by pivots to the opposite end of said lazy tongs, said bar being provided with a slot, a channel member for receiving said bar, the web of said channel member lying away from said bracket, screws passing through the web of said channel member to secure the latter, said channel member receiving said bar when said grille is in position whereby said bar covers the heads of said screws to prevent their removal, and a tongue secured to said channel member and passing through said slot in said bar, and a hole in said tongue near its end, to provide means for locking said bar in said channel member.

ln witness whereof, I hereunto subscribe my name this 5th day of February, 1923.

FRANK KITZELMAN. l/Vitnesses J. DAVID DioKlNsoN, OLIVER H. PARMELEE. 

